LTC3412
U
TYPICAL APPLICATIO S
3.3V, 2.5A Step-Down Regulator at 1MHz, Forced Continuous Mode Operation
V
IN
5V
C
**
IN3
100μF
C1 22pF X5R
R1 634k
C
IN1
22μF
1
16
SV
PV
IN
X5R 6.3V
IN
R
PG
100k
2
3
4
15
14
13
12
11
10
9
PGOOD
PGOOD
SW
SW
R
C
ITH
1000pF X7R ITH
15k
I
TH
C
C
LTC3412
100pF
L1*
PGND
PGND
SW
1μH
V
OUT
V
FB
3.3V
2.5A
R2
200k
5
R
T
R
OSC
309k
6
7
C
**
OUT
SYNC/MODE
RUN
100μF
SW
C
R
SS
4.7M
SS
470pF X7R
8
SGND
PV
IN
C
IN2
22μF
X5R 6.3V
GND
3412 TA01
*PULSE P1166.162T
**TDK C4532X5R0J107M
Lithium-Ion to 3.3V, Single Inductor Buck-Boost Converter
V
IN
2.7V TO 4.2V
C
**
IN3
C1
22pF
100μF
×2
GND
R1 576k
C
IN1
22μF
1
16
SV
PV
IN
X5R 6.3V
IN
R
PG
100k
2
3
15
14
13
12
11
10
9
PGOOD
PGOOD
SW
SW
R
ITH
15k
C
1000pF X7R
ITH
I
TH
D1
C2
100pF
LTC3412
DIODES, INC.
B320A
L1*
2μH
PGND
PGND
SW
4
5
V
V
OUT
FB
3.3V
R2
110k
R3
75k
M1
R
T
SILICONIX
Si2302DS
R
OSC
309k
6
7
C
**
OUT
R
SS
SYNC/MODE
RUN
100μF
4.7M
SW
C
SS
470pF X7R
8
SGND
PV
IN
C
IN2
22μF
X5R 6.3V
GND
3412 F04
V
2.7V
3V
3.5V
4.2V
MAXIMUM I
800mA
900mA
1.05A
IN
OUT
*TOKO D63CB
**TDK C4532X5R0J107M
1.2A
3412fb
18
Linear [ Linear ]
